Hoist



T. ULMER ET AL HOIST Filed 1923 2 Sheets-Sheet 1 1:Nev. 13, 1928.

T. ULMER ET AL HOIST 2 SheetsSheet 2 Filed May 9, 1923 Ill\ Patented Nov. 13, 1928.

UNITED tre THEODORE ULMER AND GOTTLIEB ''LMER, or ALPEN SOUTIDAKIA.

1,691,685 me mes:

Eorsr.

Application filed Mayi9, 1923: Serial No. 637,782.

This invention relates to hoists and more particularly to electrically controlled hoists wherein the motor that operates the hoistirig drum is movable with the gearing and drum,

5 providing an exceptionally small and compact article to facilitate the transportingof the same.

Another object:ofthe invention is to provide a movable trame of a particular design to support the motor and geaiing, whereby the entire structure may be nioved as a unit. Witb the oregoingand other objects in view which Will appear as the description proceeds, the invention resides in the combination and arrangement et parts and in the details of construction hereinatter described and claimed, it being understood that changes in the precise embodiment of the in* vention herein disclosed, may be made Within the scope of what is claimed, withut cleparting from the spirit of the invention.

Reterring to the drawings: Figure 1 is a sid elevational view of a hoist constructed in accordance With the invention. 7

Figure 2 is a vertical sectional view through the device.

Figure 3 is a front elevatonal view of the hoist.

Figure 4 is a bottom plan vievx of the device. Referring to the drawings inrdetail, the frame of the hoist includes a pair of spaced bars which have their lower ends connected by means of the bar 6, the upper portions of the bars being curved as at 7. The members forming the frame are held in proper spaced relation by means o:tthe shelf or plate 8, which may be secured to the bars in any suitable manner. Mounted on the plate 8, is the motor 9 which may be sup plied with electric source of supplv, 10 being provided however, electric circuit not showm The upper portions of the bars 5 are covered by the plate 11 which is cnrved proopposed contactmembers to control the viding a hood for the frame as clearlv shown b v Figures 1 and 2 of the draWing, the l1ood also providing means for connecting the hook member 12 to the hoist, wlfich hook membe'r is designed to support the hoist.

Bearings indicated at13 a're mounted on the frame and support the shait 14 that ex tends transversely of the rran1e, on Wl iiCh Shaft are mounted gears 15, the gears being energy-trom any suitable 'sliattofthe motor 9[ lin order that v 41 Will be tant at all ti1nes, an idle pulley 43 V ,up sucli slaclz as may be present therein, ina

keyed to the shaft'and disposed adjacent .to the ends thereof. Keyed to the shaft 14 at a point between the gears 15 is a sprocket 16 over which the chain or flexible l1oisting mem-' ber 17 operates. M-eshing with the gears 15 are pinions 18 disposed at the outer ends',of the shaft 19, that operates in the bearings20 Which are also secu-red to the frame of the hoist. 7 7 4- Mounted t0 'operate-witli the V shaft :19 .is "a :gear 21 disposed' substantiallyintermediate the enclsofthe shatt .19, the gear. receiving motion from the Worm 22 supported at the outer end of the shaft 23, the extreme outer end of the shaft 23, operating in the bearing 24 that is secured to the frame by means of the bracket 25. 7 A

This shatt 23 also moves in the bearing 26 and carries the beveled pinion 27 at one end tliereof, the beveled pinion m'eshing with the pinions 28 and 29 that are loosely mounted on shaft 30 which constitutes thepower shaft of the hoist. As shown, hubs 31 of the pinions 28 and 29 are formed witb clutch faces 32 to cooperate with the clutch faces 33 of the clutch member 34, which is splined on the shaft 30- so that by moving the clutch faces 32, the pinion 28 or 29 may be clutched to the shatt to operate therewith. A elutch controllirig arm is indicated at 35 and "has pivotal connection with the clutch member 34 at 36, or at a point intermediate its endS, the'up1er extremity of the arm 35 lying adjacent to the contact members 10 so that movement et i the arm 35 to operate the clutch member Will simultaneously contact with one of the members 10 to complete the circuit to the motor t0 cause the operation thereof The clutch arm 35 is operated by means of the flexible member 37 that operates over the rollers 38 supported by the arms 39. Thus it will be seenthat by apull of the flexible member 37, the arm 35 Will be operated in a manner as described. v 100 Mounted at one end of the 'shaf't 30 is a pulley* 40 over which operateS the belt 41 that also operates over the pulley' 42, the pullev beinp; mounted at one end o:t the armature the belt is provided, Which is Si1pportedbtbe piv-. oted arm 44 and allows the weight of the p1illey to be directed'to the belt 41 to take ings.

mannr as showh by Figure 1 of the draw- From the foregoing it will be seen that if it is desired to operate the hoist, the flexible member 37 is pulled, moving the arm 35 into engagement with one of the clutch faces of one of the beveled pinions 28 or 29.

As the pinion operates, the beveled pinion 27 is operated, Which in turn directs rotary motion*to the Worm 22 through shaft 33. As the worm 22 operates, the shaft 19 is operated, Which transmits motion to the pinions 18 disposed on the ends thereof, which pinions 18 transmit motion to the gears 15, whereupon the shaft 14 is operated to rotate the sprocket wheel 16 for Inoving the hoistin member 17 f it is desired to rotate the sprocket member 16 in the opposite direction, the arm 35 is moved from its active position to the opposite side of the shaft 30 where the clutch member cooperates with the opposed clutch is claimed as neW is:

member of the pinion at the opposite end of the shafh v Having ths described the invention, what In a'portable hoist a frame including a pair of end sections, the upper portions of the end sections being curved, a curved cover plate connecting the end sections, each end section including a lower bar, a she1f supported between the end sections and defining a motor support, gearing supportedby the frame, a motor on the motor support for operating the garing and a hook member secured to the curved cover plate, and said hook member adapted to be positioned in a supporting eye, V

In testimony that we daim the foregoing as our own, We have hereto fiixed our sig natures.

THEDORE ULMER. GOTTLIEB ULMER. 

